/Engine/Plugins/Animation/IKRig/Source/IKRigEditor/Public/RetargetEditor/IKRetargetEditorController.h
Callback when IK Rig asset's retarget chain's have been added or removed
void HandleRetargetChainAdded ( [UIKRigDefinition](API\Plugins\IKRig\Rig\UIKRigDefinition) * ModifiedIKRig ) const